docs: def main():
      """The main entry point for the command line interface."""
      # get arguments from the command line
      args = _get_args()
      # create the environment
      env = NESEnv(args.rom)
      # play the environment with the given mode
      if args.mode == 'human':
          play_human(env)
      else:
          play_random(env, args.steps)